Most likely a stress response usually to lower light levels. It should not be a problem, new growth will adapt to the light level unless light level is really low.

Just curious: How did you manage to get 80% humidity indoors? Sounds like it is a well sealed room otherwise it is hard to get to that level of humidity.

This is one closed room full with plants. Just enough room to wiggle through. Most dishes contain water and the container are sitting on a plant raiser. The idea is that high humidity prevents spider mites from taking over. This is the first winter the trees came in with active growth. I think it was because of the very cold august followed by a very dry and hot September. I have lots of light in that room or so I think.

What would be a good humidity level? I think best to let the water dry out then. I had no idea that everything would push out so much growth. I will keep an eye out for fungus. I was hoping to prevent that with the fan and air circulation.

Just did the math and I would need 114 of those cfl lamps. Oops, not going to happen. I would not fit them in there. Sounds a lot to me

Susanne, very nice set up and that many plants together can cause high humidity levels. Just watch out for mold issues in your home. Use lots of fans and try and not to go higher than that..

As for mites, not even humidity will keep them at bay, so be careful.It's the heat that makes them thrive, not dry air....That is why I like to keep mines in very cool rooms, have temps rise no higher than the 60.s Lot's of air movement and misted leaves quite often should help a lot. Don't let them fool you. You still run the risk of mites humid or not.

For mine , it was some pests that made brand new leaves just fall off, cut off right at the path....Thrips, or mites..

A nightmare are mites. Now thrips. Are those visible with the naked eye? I have no clue how to sleep tonight. I wiggle through my jungle a couple of times per day to inspect them. It was easier when I only had ten. Yeah and just because I can, getting three more. Time to expand through the house. Thank you Mike I will watch out for mold. Plan is, weather permitted, bring at least the smaller trees all outside and clean the room and windows. Spray with water and neem or whatever suitable. Just hoping pests will stay away. Right now night time temps is around 64 and daytime in theevening reaches 74. When temps are falling outside I think it will get colder in that room too as I shut off the heat vents. Humidity is down to 79%. I think it was so high in the beginning because all plants came in after a period of heavy rain. Did not stop raning for four days.

Susanne, I would not fret although I would be vigorous and watchful....You can always find thrips by examining the blossoms when opened and looking for tiny black thing crawling inside, blue sticky traps work well too to tell whether you have any or not. If not then I would inspect the leaves just below where your very new growth is falling off....If you see nothing, then don't worry.

But if I were you and I wanted to avoid an issue, I would crack open a window and let that room cool off quite dramatically, under 70 at all times and lower that humidity...Fresh air, plus blowing fans, plus misted leaves, and a 'cool' environment will definitely not allow mites or thrips to thrive...I would try and keep the temps as cool as possible, allowing good growth, but no infestations...

Will they still continue to grow under 70?? and flower too?

Susanne, I had that happen so mine sometime when inside. I wonder if the tree just realizes that there is not quite enough light for all the growth and aborts some of it. I don’t know. I agree with Mike...keep it as cool as possible with some blowing air. I know it is hard and I was not able to do it either all the time, but the more you can, the best time they will have (and you will too). I felt like I was fighting whiteflies and mites lots of last winter. They did come out fine, but I had to be extremely vigilant. I intend to more thoroughly disinfect them this year before bringing them in. Let us know how they are doing!

Some of the new growth on my citrus trees dried up and fell of as well, the low level of light is to blame. The days are now mostly cloudy and gloomy. My trees are not liking It, they lost a leaf or two, but my lemon-orange tree lost almost all it's leaves :( only 3-4 leaves and some flowers on the tips of every branch, 3 small branches I had to cut back to the trunk because of branch die back.

I pre-emptively prune most plants mainly to allow better air flow and more light to reach the lower leaves. Any congestion just increases the chances of all kinds of problems. I also have two fans on high setting on a timer. One is fixed high up on one side of the room pointing down towards the plants. The second one is on the floor blowing across the floor. Comes on three times for 2 hr each: at 1am, 9am and 4pm. I do not run it all the time so that it does not become too dry.

Like mike I prefer to keep it on the cool side. It is a bit easier for me since the room is really a covered unheated porch. So the temperature does drop in the night. When it drops below 45 a supplemental heater kicks in and shuts off above 50F. Most days the high temperature does not go over 70 until about March when the days start becoming long enough that Sun heats up the room.

Humidity stays around 50% except when I water and mist. Goes up to 80% for about a few hrs and then drops down eventually. Plants in the room do much better (pest wise) than ones on my window sill in bedrooms.

Shot tip will stop growing and will fall off right after the full moon. It took me 4 years to realize this, having citruses in different rooms with different temperatures and cardinal orientations. It always seemed strange to me that the tips of the new growth on each cultivar will break off almost on the same day, no matter how much care received the tree. Later I made the connection with the moon.

Conclusion: don't feel bad if only the tip of the new growth is off. It's just normal evolution

Over the summer, I noticed the tips of all new growth drying up and falling off. Just this morning my NZL new growth was shriveled. Really the moon is to blame?

Alanna if all new growth would fall off I guess I would panick now. The light and temperature changes that comes with the season and overall different surrounding contribute to some droppings I guess. Maybe some on the moon but when it started, there was no new or full moon. Thank goodness it only was a short time and only a small amount. New growth coming in strong and does not look like falling off.

The usual process it this: a flush of new growth with 3 or 4 branches, they shoot up about 4-5inches (but they grow at different rates, so 1 or 2 are only an inch or two, then all at the same time the baby leaves at the tips just shrivel up.

Could be fluctuation with the watering? I hear so often that the soil should dry out before watering. Never had a good succsess with this. Mine like a constant moisture. Not soaking wet or standing in water, but not dry either.

Too big to fit under a bucket